Chemistry

Which of the following solids has a network structure?

A. Diamond B. lodine C. Sulphur D. Graphite E. lron Correct Answer: Option A - Diamond

5 years ago

Starch undergoes complete hydrolysis to produce?

A. maltose B. lactose C. fructose D. glucose E. sucrose Correct Answer: Option D - glucose

5 years ago

Which of the following separation is routinely applied in the petroleum industry?

A. Filtration B. Chromatography C. Evaporation D. Fractional crystallization E. Fractional distillation Correct Answer: Option E - Fractional distillation

5 years ago

Copper metal will react with concentrated trioxonitrate (V) acid to give?

A. Cu(NO3)3 + NO + N2O4 + H2O B. Cu(NO3)2 + NO + H2O C. CuO + NO2 + H2O…

5 years ago

The following compounds will decompose on heating except?

A. NaHCO3 B. K2CO3 C. MgCO3 D. Ca(HCO3)2 E. ZnCO3 Correct Answer: Option B - K2CO3

5 years ago

In a chemical reaction, the reacting species possess energy of motion known as?

A. potential energy B. free energy C. bond energy D. kinetic energy E. hydration energy Correct Answer: Option D -…

5 years ago

Which of the following electronic structures belongs to a noble gas?

A. 1s² 2s² B. 1s² 2s² 2p4 C. 1s² 2s² 2p6 3s² 3p6 D. 1s² 2s² 2p² E. 1s² 2s²…

5 years ago

What is the molar mass of an alkyne with the formula Cx H 14? (H = 1, C = 12)

A. 86g B. 92g C. 98g D. 110g E. 112g Correct Answer: Option D - 110g

5 years ago

When magnesium ribbon burns in air, the products are?

A. magnesium nitride and magnesium oxide B. magnesium nitride and carbon (ll) oxide C. magnesium oxide and steam D. magnesium…

5 years ago

Destructive distillation of coal means?

A. heating coal in plentiful supply of air B. burning coal in air to produce water and carbon (IV) oxide…

5 years ago